Posted by **Anonymous** on Monday, August 13, 2012 at 8:53pm.

Let be an angle in standard position and the point

(a, b) be the point of intersection of the terminal

side of with the unit circle. State the unit circle

definitions of the six trigonometric functions.

cos = sec =

sin = csc =

tan = cot =

- trig -
**Reiny**, Monday, August 13, 2012 at 9:02pm
If is your angle, and since

r=√(a^2 + b^2)

sin = b/r

csc = r/b

cos = a/r

sec = r/a

tan = b/a

cot = a/b

These definitions should be in your textbook and are probably defined in terms of x, y and r.

You should memorize them

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